FR2471889A1 - SEALING STRIP FOR VEHICLE CASES AND METHOD FOR MANUFACTURING THE SAME - Google Patents

SEALING STRIP FOR VEHICLE CASES AND METHOD FOR MANUFACTURING THE SAME Download PDF

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Publication number
FR2471889A1
FR2471889A1 FR8021723A FR8021723A FR2471889A1 FR 2471889 A1 FR2471889 A1 FR 2471889A1 FR 8021723 A FR8021723 A FR 8021723A FR 8021723 A FR8021723 A FR 8021723A FR 2471889 A1 FR2471889 A1 FR 2471889A1
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FR
France
Prior art keywords
coating layer
strip
sealing
sealing strip
foam rubber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8021723A
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French (fr)
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FR2471889B1 (en
Inventor
Roberto Azzola
Azzola Roberto
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SAIAG SpA
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SAIAG SpA
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Publication date
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Publication of FR2471889A1 publication Critical patent/FR2471889A1/en
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Publication of FR2471889B1 publication Critical patent/FR2471889B1/fr
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/15—Sealing arrangements characterised by the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/15—Sealing arrangements characterised by the material
    • B60J10/16—Sealing arrangements characterised by the material consisting of two or more plastic materials having different physical or chemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/15—Sealing arrangements characterised by the material
    • B60J10/17—Sealing arrangements characterised by the material provided with a low-friction material on the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/20—Sealing arrangements characterised by the shape
    • B60J10/24—Sealing arrangements characterised by the shape having tubular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/80—Sealing arrangements specially adapted for opening panels, e.g. doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/921—Closure or weather strip seal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/924—Deformation, material removal, or molding for manufacture of seal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24198—Channel-shaped edge component [e.g., binding, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24744—Longitudinal or transverse tubular cavity or cell
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2902—Channel shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seal Device For Vehicle (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
  • Molding Of Porous Articles (AREA)
  • Sealing Material Composition (AREA)
  • Gasket Seals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

BANDE D'ETANCHEITE POUR CAISSES DE VEHICULES COMPORTANT UNE PARTIE PROFILEE DE FIXATION 10 A SECTION EN U, EN CAOUTCHOUC PLEIN, DANS LAQUELLE EST NOYEE UNE BANDE D'ARMATURE 12 EN METAL, ET PROCEDE DE FABRICATION DE CETTE BANDE. CETTE BANDE D'ETANCHEITE EST CARACTERISEE EN CE QUE LE PROFIL DE FIXATION COMPORTE UNE COUCHE EXTERIEURE DE REVETEMENT 16 EN CAOUTCHOUC MOUSSE, PRESENTANT UNE SURFACE EXTERIEURE 16, RENDUE PELUCHEUSE PAR ABRASION.SEALING STRIP FOR VEHICLE BODIES COMPRISING A PROFILED FIXING PART 10 WITH A U-SECTION, MADE OF SOLID RUBBER, IN WHICH A METAL REINFORCING STRIP 12 IS EMBEDDED, AND METHOD FOR MANUFACTURING THIS STRIP. THIS SEALING STRIP IS CHARACTERIZED IN THAT THE FIXING PROFILE COMPRISES AN EXTERNAL COVERING LAYER 16 OF FOAM RUBBER, PRESENTING AN EXTERNAL SURFACE 16, MADE FLINT BY ABRASION.

Description

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La présente invention se rapporte à une bande extrudée d'étanchéité pour caisses de véhicules, comportant un élément profilé de fixation, en caoutchouc plein, à section en U, dans lequel est  The present invention relates to an extruded sealing strip for vehicle bodies, comprising a U-section solid rubber fastening element in which is

noyée une bande métallique d'armature.  embedded a metal frame band.

De telles bandes d'étanchéité comportent très souvent un bourrelet d'étanchéité en caoutchouc mousse, coextrudé avec le profil de fixation et ayant, en coupe transversale, une forme qui convient à sa destination, par exemple tubulaire et sensiblement circulaire, ou encore une section en forme de lèvre, le bourrelet d'étanchéité étant porté par l'une des branches de la section en U  Such sealing strips very often comprise a foam rubber sealing bead, coextruded with the fastening profile and having, in cross-section, a shape that is suitable for its purpose, for example tubular and substantially circular, or a section in the form of a lip, the sealing bead being carried by one of the branches of the U-shaped section

du profil de fixation.fixing profile.

Il est de pratique courante de revêtir l'extérieur du  It is common practice to wear the outside of the

profil de fixation, en particulier la face dorsale et la branche oppo-  fixation profile, in particular the dorsal and oppo-

sée à celle qui porte le bourrelet d'étanchéité, d'une étoffe, par exemple du velours ou étoffe analogue à poils courts, Mais cela entraîne des difficultés importantes au cours de la fabrication et des complications dans la chaîne de fabrication. De plus, du fait que le ruban de velours est monté sur le profil de fixation avant  the wearer of a fabric such as velvet or similar short-haired fabric, but this entails significant difficulties during manufacture and complications in the production line. In addition, because the velvet ribbon is mounted on the front fastening profile

pliage de ce dernier pour lui donner sa section en U, cette opéra-  folding of the latter to give it its U-section, this opera-

tion de pliage provoque des contraintes entre le profil et la couche de velours, ces contraintes, d'une part, ayant tendance a- écarter  bending causes stresses between the profile and the pile layer, these stresses, on the one hand, tending to distance

l'une de l'autre les deux branches de la section en U et, par con-  from each other the two branches of the U-section and,

séquent, d'affaiblir la prise du profil de fixation sur l'élément correspondant de la carrosserie du véhicule et, d'autre part, ayant  to weaken the grip of the fastening profile on the corresponding element of the vehicle body and, on the other hand,

souvent pour effet de décoller le revêtement en certains endroits.  often for the effect of taking off the coating in some places.

De plus, le pliage de la bande d'étanchéité au cours de son appli-  In addition, the folding of the sealing strip during its application

cation sur la carrosserie du véhicule est lui-même difficile, du  on the bodywork of the vehicle is itself difficult,

fait que le ruban de velours est pratiquement inextensible.  makes the velvet ribbon virtually inextensible.

La bande d'étanchéité selon l'invention est caractérisée essentiellement en ce que la couche de revêtement est en caoutchouc  The sealing strip according to the invention is essentially characterized in that the coating layer is made of rubber

mousse, dont la surface extérieure est rendue pelucheuse par abrasion.  foam, whose outer surface is made fluffy by abrasion.

Ce "caoutchouc mousse" est avantageusement un caoutchouc expansé à structure cellulaire fine, dont les alvéoles fermés ont un diamètre qui, approximativement,ne dépasse pas 1 à 2/10 de millimètre, et qui  This "foam rubber" is advantageously an expanded rubber with a fine cellular structure, the closed cells of which have a diameter which does not exceed approximately 1 to 2/10 of a millimeter, and which

est sensiblement du genre de celui utilisé pour le bourrelet d'étan-  is substantially of the type used for the bead of

chéité. Selon une forme de réalisation de l'invention, si la bande d'étanchéité comprend un bourrelet d'étanchéité du type indiqué  chéité. According to one embodiment of the invention, if the sealing strip comprises a sealing bead of the type indicated

ci-dessus, la couche de revêtement et le bourrelet d'étanchéité peu-  above, the coating layer and the sealing bead may

vent être de même matière, celle-ci étant normalement de couleur noire. Suivant une autre forme de réalisation, la couche de revête-  the same material, which is normally black in color. According to another embodiment, the coating layer

ment et le bourrelet d'étanchéité peuvent être de couleurs différentes.  and the sealing bead may be of different colors.

Dans chaque cas, la surface abrasée de cette couche de revêtement donne à cette dernière l'apparence du velours. En outre, la couche de revêtement peut être étendue élastiquement sous un léger effort, de  In each case, the abraded surface of this coating layer gives the latter the appearance of velvet. In addition, the coating layer can be stretched elastically under a slight effort,

sorte qu'elle n'empêche pratiquement pas le pliage du profil de fixa-  so that it practically does not prevent the folding of the fixing profile.

tion pour lui donner une section en U et n'empêche pas non plus de cintrer la partie profilée pour lui donner la forme nécessaire au  to give it a U-shaped section and does not preclude bending the profiled part to give it the shape necessary for

montage sur une carrosserie de véhicule. -  mounting on a vehicle body. -

Le procédé selon l'invention est caractérisé en ce que  The method according to the invention is characterized in that

la couche de revêtement est rapportée au profil de fixation, par co-  the coating layer is attached to the fastening profile, by

extrusion, puis vulcanisation de ces deux parties. Après cette vul-  extrusion, then vulcanization of these two parts. After this

canisation, on enlève la "peau" de la couche de revêtement par abra-  cannulation, the "skin" of the coating layer is removed by abra-

sion, de façon connue, en général à l'aide d'une ou plusieurs meules de manière à mettre à nu la structure cellulaire de cette couche et  sion, in known manner, generally using one or more grinding wheels so as to expose the cellular structure of this layer and

à y former la surface veloutée.to form the velvety surface.

Si le bourrelet d'étanchéité et la couche de revêtement  If the sealing bead and the coating layer

sont de même matière, ce bourrelet et cette couche peuvent être co-  are of the same material, this bead and this layer may be co-

extrudés en une même alimentation de la filière d'extrusion. Dans ce cas, il suffit de deux extrudeuses: l'une, qui est la principale, ayant pour rôle d'alimenter la filière avec un mélange destiné à la formation du profil de fixation qui doit envelopper complètement la bande d'armature en têle métallique, et la seconde alimentant la filière avec un jet de mélange dilatable qui s'y répartit, vers l'ouverture de celle-ci pour former le bourrelet d'étanchéité et  extruded into the same feed extrusion die. In this case, only two extruders are required: one, which is the main one, whose role is to supply the die with a mixture intended for forming the fastening profile which must completely encase the wire-reinforced reinforcing strip. and the second supplying the die with an expandable mixing jet which is distributed thereto towards the opening thereof to form the sealing bead and

vers l'ouverture pour la formation de la couche de revêtement.  towards the opening for the formation of the coating layer.

Toutefois, les matières servant à réaliser le bourrelet d'étanchéité etla couche de revêtement sont généralement différentes l'une de l'autre, la raison principale étant que le caoutchouc mousse destiné à constituer la couche de revêtement doit, de préférence, être moins maléable que celui du bourrelet d'étanchéité. En outre, il peut être bon que la couche de revêtement contienne certains  However, the materials used to make the sealing bead and the coating layer are generally different from each other, the main reason being that the foam rubber to form the coating layer should preferably be less malleable that of the sealing bead. In addition, it may be good for the coating layer to contain some

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colorants ou pigments, à des fins de décoration, par exemple de la pou-  dyes or pigments, for decorative purposes, for example

dre de bronze pour donner un aspect "lamd".  dre bronze to give a "lamd" look.

Dans de telles conditions, la couche de revêtement et le bourrelet d'étanchéité, selon le procédé de l'invention,- sont obtenus à partir de deux courants distincts de mélanges expansibles, alimen-  Under such conditions, the coating layer and the sealing bead, according to the process of the invention, are obtained from two separate streams of expandable mixtures, which are

tant la filière de coextrusion. Autrement dit, une troisième extru-  both the coextrusion industry. In other words, a third extrusion

deuse est nécessaire pour assurer une alimentation distincte de l'ou-  is necessary to ensure a separate supply of power to the

verture de la filière servant à la formation de la couche de revête-  of the die used to form the coating layer.

ment. D'autres objets et avantages de l'invention ressortiront  is lying. Other objects and advantages of the invention will emerge

de la description qui va suivre d'un exemple préféré de réalisation  of the following description of a preferred embodiment

et des dessins annexés sur lesquels: la figure 1 est une coupe transversale d'une bande d'étanchéité selon l'invention; et la figure 2 est une coupe analogue de la même bande  and accompanying drawings in which: Figure 1 is a cross section of a sealing strip according to the invention; and FIG. 2 is a similar section of the same strip

d'étanchéité, en cours de fabrication.  sealing, during manufacture.

La référence 10 désigne la partie profilée de fixation à section en U, en caoutchouc massif, dans laquelle est encastrée une bande métallique 12 d'armature, d'un type quelconque approprié, connu en soi. Sur l'une des branches (la branche 1Oa) de la section en U du  The reference 10 designates the profiled U-section fastening section, of solid rubber, in which is embedded a metal strip 12 of reinforcement, of any suitable type, known per se. On one of the branches (branch 1Oa) of the U-section of the

profil de fixation 10, on forme, par coextrusion, un bourrelet tubu-  fastening profile 10, a tubular bead is formed by coextrusion.

laire d'étanchéité 14 à section circulaire, en caoutchouc mousse.  sealing strip 14 of circular section, of foam rubber.

Conformément à l'invention,, la face dorsale lOb et l'autre branche lOc du profil de fixation 10 sont revêtues extérieurement d'une couche  According to the invention, the dorsal surface 10b and the other branch 10c of the fastening profile 10 are coated externally with a layer

continue 16 en caoutchouc mousse, coextrudée avec le profil 10.  Continuous 16 foam rubber, coextruded with the profile 10.

Dans un exemple caractéristique, l'épaisseur de la couche de revêtement 16 ne dépasse par 1 mm, et la surface extérieure 16' de cette couche est abrasée, de la manière indiquée plus haut, ce qui  In a typical example, the thickness of the coating layer 16 does not exceed 1 mm, and the outer surface 16 'of this layer is abraded, as indicated above, which

lui donne un aspect velouté, aussi bien au toucher qu'à la vue.  gives it a velvety appearance, both touch and sight.

Le caoutchouc mousse constituant la couche 16 est, de préférence, moins maléable (ou moins dur) que celui qui constitue le  The foam rubber constituting the layer 16 is preferably less malleable (or less hard) than that which constitutes the

bourrelet d'étanchéité 14. En outre, la couche 16 peut avoir une cou-  In addition, the layer 16 may have a

leur différente de celle du bourrelet (qui, en général, est noir).  their different from that of the bead (which, in general, is black).

Dans les deux cas, on fait appel à des mélanges de caoutchoucs expan-  In both cases, expanded rubber blends are used.

sibles, ayant des compositions convenables, alimentés séparément dans  sible, having suitable compositions, fed separately into

la filiêre de coextrusion.the coextrusion thread.

La figure 2 montre comment se présente la bande d'étan-  Figure 2 shows how the water band

chéité tout de suite après les opérations de coextrusion et de vul-  soon after the coextrusion and vul-

canisation. A ce stade, le profil de fixation 10 a encore la forme plate, donnée dans la coextrusion, ce qui permet d'exécuter facilement l'abrasion (meulage) de la face extérieure de la couche de revête-  mechanization. At this stage, the fastening profile 10 still has the flat shape, given in the coextrusion, which makes it possible to easily perform abrasion (grinding) of the outer face of the coating layer.

ment 16; ensuite, on plie le seul profil de fixation 10 transver-  16; Then, the only transverse fastening profile is folded.

salement jusqu'à lui donner sa forme définitiveA section en U, repré-  until it is definitively shaped.A U-shaped section

sentée sur la figure 1.shown in Figure 1.

Il est évident que des modifications et variantes peuvent être apportées à la réalisation décrite, sans pour cela sortir du  It is obvious that modifications and variants can be made to the described embodiment, without departing from the

cadre de l'invention.framework of the invention.

Claims (7)

R E V E N D I C A T I 0 N SR E V E N D I C A T I 0 N S 1. Bande d'étanchéité pour caisses de véhicules comportant une partie profilée de fixation (10) à section en U, en caoutchouc plein,dans laquelle est noyée une bande d'armature (12) en métal, cette bande étant caractériséeen ce que le profil de fixation comporte une couche extérieure de revêtement (16) en caoutchouc mousse, présen-  A sealing strip for vehicle bodies having a profiled U-shaped section (10) of solid rubber in which a reinforcing strip (12) of metal is embedded, said strip being characterized in that the fastening profile comprises an outer layer of foam rubber coating (16), tant une surface extérieure (161) rendue pelucheuse par abrasion.  an outer surface (161) made fluffy by abrasion. 2. Bande selon la revendication 1, ayant un bourrelet d'étan-  2. The strip of claim 1 having a bead of chéité (14), en caoutchouc mousse, coextrudé avec le profil de fixa-  gap (14) made of foam rubber, coextruded with the fixing profile tion et porté par l'une des branches de 1iU, cette bande étant carac-  tion and carried by one of the branches of the Union, this band being térisée en ce que ladite couche de revêtement (16) en caoutchouc mousse recouvre la face dorsale et l'autre branche de l'Uo  characterized in that said foam rubber coating layer (16) covers the back face and the other leg of the Uo 3. Bande selon la revendication 2, caractérisée an ce que le caoutchouc mousse qui constitue la couche de revêtement (16) est plus rigide que celui du bourrelet d'étanchéité (14)oBand according to claim 2, characterized in that the foam rubber which constitutes the coating layer (16) is stiffer than that of the sealing bead (14). 4. Bande d'étanchéité selon la revendication 2, caractérisée en ce que la couche de revêtement (16) et le bourrelet d'étanchéitéSealing strip according to claim 2, characterized in that the coating layer (16) and the sealing bead (14) sont de couleurs différentes.(14) are of different colors. 5. Procédé de réalisation de la bande d'étanchéité selon  5. Method of producing the sealing strip according to l'une quelconque des revendications 1 à 4, caractérisé en ce que  any of claims 1 to 4, characterized in that la couche de revêtement de la partie profilée de fixation est réa-  the coating layer of the profiled fastening part is lisée par coextrusion, suivie de l'ensemble obtenu-.  by coextrusion, followed by the set obtained. 6. Procédé selon la revendication 5, caractérisé en ce que la couche de revêtement et le bourrelet d'étanchéité sont obtenus par  6. Method according to claim 5, characterized in that the coating layer and the sealing bead are obtained by alimentations simultanées de la filière.  simultaneous supply of the sector. 7. Procédé selon la revendication 5, caractérisé en ce que la couche de revêtement et le bourrelet d'étanchéité sont obtenus en  7. Method according to claim 5, characterized in that the coating layer and the sealing bead are obtained by envoyant deux courants de mélanges distincts dans la filière.  sending two streams of separate mixtures into the die.
FR8021723A 1979-12-21 1980-10-10 SEALING STRIP FOR VEHICLE CASES AND METHOD FOR MANUFACTURING THE SAME Granted FR2471889A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69460/79A IT1119627B (en) 1979-12-21 1979-12-21 GASKET PROFILE FOR VEHICLE BODIES AND PROCEDURE FOR ITS MANUFACTURE

Publications (2)

Publication Number Publication Date
FR2471889A1 true FR2471889A1 (en) 1981-06-26
FR2471889B1 FR2471889B1 (en) 1984-11-30

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FR8021723A Granted FR2471889A1 (en) 1979-12-21 1980-10-10 SEALING STRIP FOR VEHICLE CASES AND METHOD FOR MANUFACTURING THE SAME

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US (2) US4381273A (en)
JP (1) JPS5690744A (en)
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FR2471889B1 (en) 1984-11-30
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AU538654B2 (en) 1984-08-23
JPS5690744A (en) 1981-07-23
IT7969460A0 (en) 1979-12-21
IT1119627B (en) 1986-03-10
AU6299180A (en) 1981-06-25
CA1147771A (en) 1983-06-07
US4411941A (en) 1983-10-25
GB2065755A (en) 1981-07-01
ES495704A0 (en) 1981-10-01

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